I've converted a web application from ASP.NET 2.0 in VS 2005 to ASP.NET 3.5 in VS 2008. When I run the site from within VS everything works fine. When I deploy it to my local IIS 7 server I get the following error.
Server Error in '/PrzemekLach' Application.
Could not load file or assembly 'System.Data' or one of its dependencies. An attempt was made to load a program with an incorrect format.
Description:
An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.BadImageFormatException: Could not load file or assembly 'System.Data' or one of its dependencies. An attempt was made to load a program with an incorrect format.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Assembly Load Trace: The following information can be helpful to determine why the assembly 'System.Data' could not be loaded.
WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].
Stack Trace:
[BadImageFormatException: Could not load file or assembly 'System.Data' or one of its dependencies. An attempt was made to load a program with an incorrect format.]
System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +0
System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +465
System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +181
System.Reflection.Assembly.Load(String assemblyString) +42
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +190
[ConfigurationErrorsException: Could not load file or assembly 'System.Data' or one of its dependencies. An attempt was made to load a program with an incorrect format.]
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +3642024
System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +402
System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) +155
System.Web.Configuration.AssemblyInfo.get_AssemblyInternal() +36
System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +235
System.Web.Compilation.WebDirectoryBatchCompiler..ctor(VirtualDirectory vdir) +214
System.Web.Compilation.BuildManager.BatchCompileWebDirectoryInternal(VirtualDirectory vdir, Boolean ignoreErrors) +57
System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) +259
System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) +406
System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) +125
System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +203
System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +52
System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +50
System.Web.MaterializeHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +419
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +274
Version Information: Microsoft .NET Framework Version:2.0.50727.1433; ASP.NET Version:2.0.50727.1433
From that last line it appears the IIS is running only ASP.NET 2.0xxx. I have ASP.NET 3.5 installed.
So, is the problem in fact that IIS is using the wrong version of ASP.NET and if so how do I go about changing it. Or is this another problem altogether.
przemeklach
Member
227 Points
119 Posts
Could not load file or assembly 'System.Data' or one of its dependencies
Jan 19, 2008 04:42 AM|LINK
Hopefully I got the right forum here.
I've converted a web application from ASP.NET 2.0 in VS 2005 to ASP.NET 3.5 in VS 2008. When I run the site from within VS everything works fine. When I deploy it to my local IIS 7 server I get the following error.
Server Error in '/PrzemekLach' Application.
Could not load file or assembly 'System.Data' or one of its dependencies. An attempt was made to load a program with an incorrect format.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.Exception Details: System.BadImageFormatException: Could not load file or assembly 'System.Data' or one of its dependencies. An attempt was made to load a program with an incorrect format.
Source Error:
Assembly Load Trace: The following information can be helpful to determine why the assembly 'System.Data' could not be loaded.
Stack Trace:
Version Information: Microsoft .NET Framework Version:2.0.50727.1433; ASP.NET Version:2.0.50727.1433
From that last line it appears the IIS is running only ASP.NET 2.0xxx. I have ASP.NET 3.5 installed.
So, is the problem in fact that IIS is using the wrong version of ASP.NET and if so how do I go about changing it. Or is this another problem altogether.
Thanks in advance.